Perfect Compatibility: This filter set is specifically designed for Bosch Unlimited Series 2 and Series 8 vacuum cleaners to ensure a snug fit and optimal performance without the need for a filter holder. Efficient Filtration: The HEPA filter included in the set effectively captures fine dust, creating a cleaner living environment and improving indoor air quality. Convenient Cleaning: The filter is easy to maintain with the included cleaning brush, and the center button mechanism simplifies the cleaning process, making maintenance hassle-free. The filter screen cover is not a "disposable" accessory, but rather the "first line of defense" in a vacuum cleaner's filtration system - it not only protects the core filter and reduces operating costs, but also helps improve filtration efficiency. In daily use, it is important to clean it regularly (to prevent the screens themselves from becoming clogged and impairing suction power). User-friendly design: Lightweight and easy to install, this filter set allows for quick replacement to ensure your vacuum cleaner performs optimally with minimal downtime. Product name: HEPA filter with cleaning brush. Fits: 12023350, 12026106, 12036642, 12023349; for Bosch Unlimited for Gen2 Series 8, BS1... for BBS 8... BCS1... BCS8... BKS8...(BSS825CARP) Vacuum Cleaner (not for Series 6), BBS 11114AU BBS 111 14AU BBS 1114 BBS 1114 BBS 1114CN BBS 1114CN BBS 1114CN BBS 1214K BBS 122424AU BBS 1224AU BBS 1224CN BBS 1224CN BBS 1114AU 224CN BBS 1114CN BBS 1114AU 224CN BBS 1114CN BBS 1114CN BBS 1114AU 224CN BBS 1114CN BBS 224 NC. BBS 1BASE BBS 1BASE BBS 1U224 BBS 1U224 BBS 1ZOO BBS 1ZOO BBS 1ZOOCN BCS1000 BCS1101 GB BB CS101GB BCS101GB BCS111GB 22GB BCSS. 122GB BCS122GB BCS1ALL BCS1ALL BCS1TOP BCS1TOPNC BCS1TOPNC BCS1ULTD BBS 1123BJP/02 BBS 1123BJP/03 BBS 1223WJP/02 BBS 1223WJP/03 BBS 811 PETGB/03 BBS 81PETGB/04 BCS8225P